Research Only Healing & Recovery

Histatin

also known as: Histatin-5, Histatin-3, Histatin-1, Salivary histatins

Why mouth wounds heal fast — the histidine-rich salivary peptides with potent antifungal activity that explain saliva's remarkable healing properties.

A family of histidine-rich cationic peptides (12-38 aa) secreted by salivary glands with potent antifungal activity against Candida albicans and wound-healing promotion — explaining why oral wounds heal 2-3x faster than skin wounds.

Mechanism of action

Histatin-5 is internalized by Candida via the cell-surface receptor Ssa2, then targets mitochondria, causing loss of membrane potential, ROS generation, and ATP release — a non-lytic killing mechanism. For wound healing, histatins promote epithelial cell migration and fibroblast activity.

Primary uses

Endogenous oral antimicrobial defense
Oral wound healing acceleration
Research target for topical antifungals
Dental implant biofilm prevention

Typical dosing

N/A N/A N/A (endogenous)

Normal salivary concentration ~30-60 mcg/mL. Xerostomia patients have depleted levels.

Regulatory status

Not approved as a drug. In preclinical development for topical antifungals, wound-healing accelerators, and dental implant coatings.

References

[pubmed] Oppenheim FG, et al. "Histatins, a novel family of histidine-rich proteins in human parotid secretion." J Biol Chem. 1988;263(16):7472-7477.
[pubmed] Oudhoff MJ, et al. "Histatins are the major wound-closure stimulating factors in human saliva." FASEB J. 2008;22(11):3805-3812.

Related peptides

LL-37

The only human cathelicidin — an antimicrobial peptide with direct activity against bacteria, fungi, viruses, and biofilms, with additional roles in wound healing and immune signaling.

Cathelicidin

The parent of LL-37 — the sole human cathelicidin, whose expression is directly regulated by vitamin D and whose cleavage product LL-37 is a key effector of innate antimicrobial defense.

BPC-157

A synthetic pentadecapeptide from gastric protein, widely studied in animal models for tendon, ligament, and gastrointestinal healing.

GHK-Cu

A naturally occurring human tripeptide-copper complex with extensive topical cosmetic evidence and strong in-vitro data on collagen synthesis, angiogenesis, and anti-inflammatory signaling.

Disclaimer

This entry is for educational purposes only and does not constitute medical advice. Dosing information reflects published regulatory or research data and is not a recommendation. Many compounds described here are not approved for human use in the United States. Consult a licensed medical professional before considering any peptide therapy.